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Alpha Persei Cluster

The Alpha Persei Cluster, also known as Melotte 20 or Collinder 39, is an open cluster of stars in the northern constellation of Perseus. To the naked eye, the cluster consists of several blue-hued spectral type B stars. The most luminous member is the ~2nd magnitude yellow supergiant Mirfak, also known as Alpha Persei. Bright members also include Delta…

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Apparent dimensions (V)
6.1°
Apparent magnitude (V)
1.2[citation needed]
Constellation
Perseus
Declination
+48° 48′ 00″
Distance
570 ly (175 pc)
Estimated age
49.5±6.0 Myr

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Alpha Persei Cluster

Nodes35
Edges34
Triples23
Avg. degree1.94
Density0.057143
Components1

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Alpha Persei Cluster

Top relations

related to External links · 15
Alpha Persei Cluster → Alpha Persei Moving Cluster, Archived, Astronomical Photographs, Christine, Frommert, Hartmut, Janne, Kronberg, Käld, March, Mel, Retrieved, SEDS, The Alpha Persei Cluster, The Messier Catalogue
Apparent dimensions (V) · 1
Alpha Persei Cluster → 6.1°
Apparent magnitude (V) · 1
Alpha Persei Cluster → 1.2[citation needed]
Constellation · 1
Alpha Persei Cluster → Perseus
Declination · 1
Alpha Persei Cluster → +48° 48′ 00″
Distance · 1
Alpha Persei Cluster → 570 ly (175 pc)
Estimated age · 1
Alpha Persei Cluster → 49.5±6.0 Myr
Other designations · 1
Alpha Persei Cluster → Per OB3, Cr 39, Mel 20, OCl 392.0
Right ascension · 1
Alpha Persei Cluster → 03h 26m 42.0s

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Important terminology

cluster also persei alpha stars members 20 distance known 30 perseus pc ly mel constellation age 39 open magnitude 48

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Alpha Persei ClusterApparent dimensions (V)6.1°1.00infobox
Alpha Persei ClusterApparent magnitude (V)1.2[citation needed]1.00infobox
Alpha Persei ClusterConstellationPerseus1.00infobox
Alpha Persei ClusterDeclination+48° 48′ 00″1.00infobox
Alpha Persei ClusterDistance570 ly (175 pc)1.00infobox
Alpha Persei ClusterEstimated age49.5±6.0 Myr1.00infobox
Alpha Persei ClusterOther designationsPer OB3, Cr 39, Mel 20, OCl 392.01.00infobox
Alpha Persei ClusterRight ascension03h 26m 42.0s1.00infobox
Alpha Persei Clusterrelated to External linksFrommert0.60section
Alpha Persei Clusterrelated to External linksHartmut0.60section
Alpha Persei Clusterrelated to External linksKronberg0.60section
Alpha Persei Clusterrelated to External linksChristine0.60section

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